Add ramdisk support and shell commands #232
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Introduce several new data structures and allocator wrappers: - CritBitTree: A binary crit-bit tree for NUL-terminated strings. - LinkedList: Generic single and double linked lists with custom allocators. - LruCache: A fixed-capacity LRU cache. - TaggedPointer: Stores type info in unused pointer bits. - CustomAllocatorWrapper: Enables using custom allocators with containers.
Introduces a comprehensive system for building root filesystems, supporting both initial RAM disks (INITRD) and standalone disk images. This includes: - New `cmake/BashConfigHelpers.cmake` for managing bash configurations. - `register_filesystem` CMake function in `RuntimeHelpers.cmake`. - `rootfs` subdirectory with its own CMake configuration. - `scripts/actions/make_rootfs.bash` and `scripts/rootfs/make_fat.bash` for orchestrating and creating FAT filesystems. - A `ramdisk` feature flag to control INITRD vs. image generation. - New bash helper functions for size conversions. - Fixes a bug in test filtering logic.
Introduces a new `Path` class in `kernel/src/vfs/path.hpp` to provide robust path manipulation capabilities for the Virtual File System. This includes parsing, normalization, component access, concatenation, and comparison of file paths. A comprehensive test suite is also added.
Refactor `OptionalField` in `utils.hpp` from a type alias to a macro to ensure `NO_UNIQUE_ADDRESS` is correctly applied with `std::conditional_t`.
Introduce `DivRoundUp` for safe integer division, `span::get` for structured access to spans, and compile-time array utilities. Add `UNUSED`, `CONCAT`, and `RESERVED` macros. Refactor PMM calculations to use `DivRoundUp` and fix a header guard.
Introduces the core Virtual File System (VFS) framework, including: - Generic VFS interfaces and types for filesystem operations. - Error handling mechanisms (`VfsError`, `Result`). - An in-memory I/O driver for testing and simple storage. - Base FAT filesystem implementation (`Fat` template). - Specific drivers for FAT12, FAT16, and FAT32. - Comprehensive unit tests for FAT12. This lays the foundation for managing various filesystems within the kernel.
Introduces the VFS module, providing a unified interface for filesystem operations like mounting, file, and directory management. Includes core implementation, public API, and comprehensive tests.
Bootloader now locates and passes ramdisk information to the kernel. The VFS module mounts the FAT12 ramdisk at the root filesystem. Introduces 'cd', 'ls', 'cat', and 'pwd' commands to the kernel shell for basic filesystem interaction.
F1r3d3v
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that referenced
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Dec 11, 2025
Bootloader now locates and passes ramdisk information to the kernel. The VFS module mounts the FAT12 ramdisk at the root filesystem. Introduces 'cd', 'ls', 'cat', and 'pwd' commands to the kernel shell for basic filesystem interaction.
F1r3d3v
added a commit
that referenced
this pull request
Dec 11, 2025
Bootloader now locates and passes ramdisk information to the kernel. The VFS module mounts the FAT12 ramdisk at the root filesystem. Introduces 'cd', 'ls', 'cat', and 'pwd' commands to the kernel shell for basic filesystem interaction.
Jlisowskyy
pushed a commit
that referenced
this pull request
Jan 7, 2026
Bootloader now locates and passes ramdisk information to the kernel. The VFS module mounts the FAT12 ramdisk at the root filesystem. Introduces 'cd', 'ls', 'cat', and 'pwd' commands to the kernel shell for basic filesystem interaction.
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Bootloader now locates and passes ramdisk information to the kernel.
The VFS module mounts the FAT12 ramdisk at the root filesystem.
Introduces 'cd', 'ls', 'cat', and 'pwd' commands to the kernel shell for basic filesystem interaction.